Archaeology is one of the branches of science that we investigate in this course. This News Science pictorial shows 25 of the more mysterious discoveries, including the Nazca lines, the round boulders of Costa Rica, and the 2000-year Antikythera Mechanism, a clock-like machine consisting of more than 30 precise, hand-cut bronze gears.
Check out these fascinating finds and consider what their use might have been.
Related reading: Who Laid the Foundations of Science?; African Stone, Shell and Egg Technologies; Africa is Archaeologically Rich; 4000-Year Bethlehem Tomb Found; Boat Petroglyphs in Egypt's Central Desert